File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
The moose likes Programmer Certification (SCJP/OCPJP) and the fly likes valueOf() vs parseXXX() Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Certification » Programmer Certification (SCJP/OCPJP)
Bookmark "valueOf() vs parseXXX()" Watch "valueOf() vs parseXXX()" New topic

valueOf() vs parseXXX()

Chaitanya Jadhav
Ranch Hand

Joined: Mar 13, 2009
Posts: 42
According to K & B
The difference between the two methods is

* parseXxx() returns the named primitive.
* valueOf() returns a newly created wrapped object of the type that invoked
the method.

But both method return primitive as well as Object.??
then what is difference between them?

SCJP 1.5 80%
Ankit Garg

Joined: Aug 03, 2008
Posts: 9466

Chaitanya the book is right. valueOf returns a wrapper class object. This code

works only because of autoboxing. valueOf here returns an Integer object which is unboxed to int. To test this, try this code

Same is the case with parseInt here

SCJP 6 | SCWCD 5 | Javaranch SCJP FAQ | SCWCD Links
Chaitanya Jadhav
Ranch Hand

Joined: Mar 13, 2009
Posts: 42

nice example .
now i understood..
I agree. Here's the link:
subject: valueOf() vs parseXXX()
jQuery in Action, 3rd edition